Cita APA (7a ed.)

Berry, F., & Kress, W. J. (1991). Heliconia: An identification guide. Smithsonian Institution Press.

Cita Chicago Style (17a ed.)

Berry, Fred, y W. John Kress. Heliconia: An Identification Guide. Washington: Smithsonian Institution Press, 1991.

Cita MLA (8a ed.)

Berry, Fred, y W. John Kress. Heliconia: An Identification Guide. Smithsonian Institution Press, 1991.